From f5c22e9409fe94a7069da1ba980a1b57cca0f242 Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Thu, 1 Mar 2012 18:58:59 +0000
Subject: [PATCH] Add the source file with trivial definitions in it that was
 missing from r151822, sorry sorry. =[

We need 'git svn nothave' or some such...

llvm-svn: 151824
---
 lib/Support/Hashing.cpp | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 lib/Support/Hashing.cpp

diff --git a/lib/Support/Hashing.cpp b/lib/Support/Hashing.cpp
new file mode 100644
index 00000000000..c69efb7c3cc
--- /dev/null
+++ b/lib/Support/Hashing.cpp
@@ -0,0 +1,29 @@
+//===-------------- lib/Support/Hashing.cpp -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides implementation bits for the LLVM common hashing
+// infrastructure. Documentation and most of the other information is in the
+// header file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/Hashing.h"
+
+using namespace llvm;
+
+// Provide a definition and static initializer for the fixed seed. This
+// initializer should always be zero to ensure its value can never appear to be
+// non-zero, even during dynamic initialization.
+size_t llvm::hashing::detail::fixed_seed_override = 0;
+
+// Implement the function for forced setting of the fixed seed.
+// FIXME: Use atomic operations here so that there is no data race.
+void llvm::set_fixed_execution_hash_seed(size_t fixed_value) {
+  hashing::detail::fixed_seed_override = fixed_value;
+}